San Diego, CA
TANDEM DIABETES CARE INCTNDM— Latest position per institution from SEC 13F filings
15
Institutional holders
80.10M
Total shares held
1.77B
Estimated value
4.01M
Avg. position size
BLACKROCK FINANCE, INC.
CIK 1364742
Shares
11.12M
Value
448.14M
Filed
Jun 30, 2024
BLACKROCK, INC.
CIK 2012383
Shares
10.69M
Value
204.94M
Filed
Mar 31, 2026
VANGUARD GROUP INC
CIK 102909
Shares
7.34M
Value
161.36M
Filed
Dec 31, 2025
UBS GROUP AG
CIK 1610520
Shares
7.23M
Value
138.53M
Filed
Mar 31, 2026
EMINENCE CAPITAL, LP
CIK 1107310
Shares
5.17M
Value
152.94M
Filed
Dec 31, 2023
SESSA CAPITAL IM, L.P.
CIK 1595849
Shares
4.73M
Value
90.69M
Filed
Mar 31, 2026
VANGUARD PORTFOLIO MANAGEMENT LLC
CIK 2100121
Shares
3.99M
Value
76.55M
Filed
Mar 31, 2026
ARROWMARK COLORADO HOLDINGS LLC
CIK 1483859
Shares
3.10M
Value
59.50M
Filed
Mar 31, 2026
VANGUARD CAPITAL MANAGEMENT LLC
CIK 2100119
Shares
3.04M
Value
58.26M
Filed
Mar 31, 2026
GW&K INVESTMENT MANAGEMENT, LLC
CIK 1082917
Shares
2.69M
Value
51.55K
Filed
Mar 31, 2026
STATE STREET CORP
CIK 93751
Shares
2.66M
Value
51.04M
Filed
Mar 31, 2026
HOOD RIVER CAPITAL MANAGEMENT LLC
CIK 1578177
Shares
2.55M
Value
30.98M
Filed
Sep 30, 2025
DRIEHAUS CAPITAL MANAGEMENT LLC
CIK 938206
Shares
2.30M
Value
44.18M
Filed
Mar 31, 2026
CITADEL ADVISORS LLC
CIK 1423053
Shares
2.28M
Value
43.65M
Filed
Mar 31, 2026
GOLDMAN SACHS GROUP INC
CIK 886982
Shares
2.22M
Value
42.54M
Filed
Mar 31, 2026
PARADICE INVESTMENT MANAGEMENT LLC
CIK 1620275
Shares
2.04M
Value
39.15M
Filed
Mar 31, 2026
TWO SIGMA INVESTMENTS, LP
CIK 1179392
Shares
1.86M
Value
35.74M
Filed
Mar 31, 2026
STEPHENS INVESTMENT MANAGEMENT GROUP LLC
CIK 1314440
Shares
1.74M
Value
32.39M
Filed
Jun 30, 2025
GEODE CAPITAL MANAGEMENT, LLC
CIK 1214717
Shares
1.68M
Value
32.21M
Filed
Mar 31, 2026
JENNISON ASSOCIATES LLC
CIK 53417
Shares
1.66M
Value
31.79M
Filed
Mar 31, 2026
| # | Institution | CIK | Shares | Est. Value | Period |
|---|---|---|---|---|---|
| 1 | BLACKROCK FINANCE, INC. | 1364742 | 11.12M | 448.14M | Jun 30, 2024 |
| 2 | BLACKROCK, INC. | 2012383 | 10.69M | 204.94M | Mar 31, 2026 |
| 3 | VANGUARD GROUP INC | 102909 | 7.34M | 161.36M | Dec 31, 2025 |
| 4 | UBS GROUP AG | 1610520 | 7.23M | 138.53M | Mar 31, 2026 |
| 5 | EMINENCE CAPITAL, LP | 1107310 | 5.17M | 152.94M | Dec 31, 2023 |
| 6 | SESSA CAPITAL IM, L.P. | 1595849 | 4.73M | 90.69M | Mar 31, 2026 |
| 7 | VANGUARD PORTFOLIO MANAGEMENT LLC | 2100121 | 3.99M | 76.55M | Mar 31, 2026 |
| 8 | ARROWMARK COLORADO HOLDINGS LLC | 1483859 | 3.10M | 59.50M | Mar 31, 2026 |
| 9 | VANGUARD CAPITAL MANAGEMENT LLC | 2100119 | 3.04M | 58.26M | Mar 31, 2026 |
| 10 | GW&K INVESTMENT MANAGEMENT, LLC | 1082917 | 2.69M | 51.55K | Mar 31, 2026 |
| 11 | STATE STREET CORP | 93751 | 2.66M | 51.04M | Mar 31, 2026 |
| 12 | HOOD RIVER CAPITAL MANAGEMENT LLC | 1578177 | 2.55M | 30.98M | Sep 30, 2025 |
| 13 | DRIEHAUS CAPITAL MANAGEMENT LLC | 938206 | 2.30M | 44.18M | Mar 31, 2026 |
| 14 | CITADEL ADVISORS LLC | 1423053 | 2.28M | 43.65M | Mar 31, 2026 |
| 15 | GOLDMAN SACHS GROUP INC | 886982 | 2.22M | 42.54M | Mar 31, 2026 |
| 16 | PARADICE INVESTMENT MANAGEMENT LLC | 1620275 | 2.04M | 39.15M | Mar 31, 2026 |
| 17 | TWO SIGMA INVESTMENTS, LP | 1179392 | 1.86M | 35.74M | Mar 31, 2026 |
| 18 | STEPHENS INVESTMENT MANAGEMENT GROUP LLC | 1314440 | 1.74M | 32.39M | Jun 30, 2025 |
| 19 | GEODE CAPITAL MANAGEMENT, LLC | 1214717 | 1.68M | 32.21M | Mar 31, 2026 |
| 20 | JENNISON ASSOCIATES LLC | 53417 | 1.66M | 31.79M | Mar 31, 2026 |
Data sourced from SEC Form 13F institutional holdings reports. Positions reflect the most recent filing per institution.